Re: Avoiding gelatine ---agar as an alternative? (fwd)

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Ender100@aol.com
Date: 07/18/02-07:46:50 PM Z


isn't agar agar what they used to (maybe still do) use in petri dishes to
grow cultures?

In a message dated 7/18/02 9:29:06 PM, holtsg@duke.usask.ca writes:

<<
Hi Gord,
Could you please post this to the list on my behalf:

>Well one topic I don't think I've ever seen come up is discussion
>on agar (also known as agar-agar). It's a gelatin-like substance
>made from certain types of seaweed (laver, etc.--NO animal)
>Apparently it's a fantastic size (esp. for VDB). I myself have
>used it for single coat gums (though I have not yet perfected how
>to apply it).
>Personally, I'd be curious to hear about anyone's experience with
>it, either as a sizing agent OR as an alternative to gelatine in a
>homemade photo emulsion. Various properties,
>similarities/dissimilarities to gelatine would all be of interest
>to me.
>For anyone interested, agar can be purchased in oriental grocery
>stores (among other places), and is the main ingredient in
>Chinese/Vietnamese jello (try the taro or mango flavours ;-) It's
>modestly priced, but must somewhere be available inexpensively in >>


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